Ueno is the head of her middle school's science club and a brilliant inventor. She can easily create devices that can convert any liquid into drinkable water, completely remove foul odors from the most foul smelling garnment, or even generate dark matter that can be used as concealment. There is nothing that Ueno cannot accomplish, or so it would seem. Although her devices are amazing, she doesn't however create them for the betterment of mankind, but rather to conquer the one thing that she cannot do. She had a crush on Tanaka and is trying everything in her power to make him realize that she does.